Camera: Implement getCameraCharacteristics

Bug: 10904541
Bug: 10360518
Change-Id: Ie9ca6b3b0b5f2fe529e6b0decc193096e770a017

2 files changed, 39 insertions, 0 deletions

diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index fe16314..5e84aaf 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -225,6 +225,43 @@ status_t CameraService::getCameraInfo(int cameraId,
     return rc;
 }
 
+status_t CameraService::getCameraCharacteristics(int cameraId,
+                                                CameraMetadata* cameraInfo) {
+    if (!cameraInfo) {
+        ALOGE("%s: cameraInfo is NULL", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    if (!mModule) {
+        ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__);
+        return -ENODEV;
+    }
+
+    if (mModule->common.module_api_version < CAMERA_MODULE_API_VERSION_2_0) {
+        // TODO: Remove this check once HAL1 shim is in place.
+        ALOGE("%s: Only HAL module version V2 or higher supports static metadata", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    if (cameraId < 0 || cameraId >= mNumberOfCameras) {
+        ALOGE("%s: Invalid camera id: %d", __FUNCTION__, cameraId);
+        return BAD_VALUE;
+    }
+
+    int facing;
+    if (getDeviceVersion(cameraId, &facing) == CAMERA_DEVICE_API_VERSION_1_0) {
+        // TODO: Remove this check once HAL1 shim is in place.
+        ALOGE("%s: HAL1 doesn't support static metadata yet", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    struct camera_info info;
+    status_t ret = mModule->get_camera_info(cameraId, &info);
+    *cameraInfo = info.static_camera_characteristics;
+
+    return ret;
+}
+
 int CameraService::getDeviceVersion(int cameraId, int* facing) {
     struct camera_info info;
     if (mModule->get_camera_info(cameraId, &info) != OK) {
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index b34a0f6..ad6a582 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -71,6 +71,8 @@ public:
     virtual int32_t     getNumberOfCameras();
     virtual status_t    getCameraInfo(int cameraId,
                                       struct CameraInfo* cameraInfo);
+    virtual status_t    getCameraCharacteristics(int cameraId,
+                                                 CameraMetadata* cameraInfo);
 
     virtual status_t connect(const sp<ICameraClient>& cameraClient, int cameraId,
             const String16& clientPackageName, int clientUid,